<template>
  <div>
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>权限管理</el-breadcrumb-item>
      <el-breadcrumb-item>角色列表</el-breadcrumb-item>
    </el-breadcrumb>
    <el-card>
      <el-row>
        <el-col>
          <el-button type="primary" @click="addDialogVisible = true"
            >添加角色</el-button
          >
        </el-col>
      </el-row>
      <el-table :data="rolesList" border stripe>
        <!-- 展开列 -->
        <el-table-column type="expand">
          <template slot-scope="scope">
            <el-row
              :class="['bdbottom', index1 === 0 ? 'bdtop' : '', 'vcenter']"
              v-for="(item1, index1) in scope.row.children"
              :key="item1.id"
            >
              <!-- 渲染一级权限 -->
              <el-col :span="5">
                <el-tag
                  @close="removeRightById(scope.row, item1.id)"
                  closable
                  >{{ item1.authName }}</el-tag
                >
                <i class="el-icon-caret-right"></i>
              </el-col>
              <!-- 渲染二、三级权限 -->
              <el-col :span="19">
                <el-row
                  :class="[index2 === 0 ? '' : 'bdtop', 'vcenter']"
                  v-for="(item2, index2) in item1.children"
                  :key="item2.id"
                >
                  <el-col :span="6">
                    <el-tag
                      type="success"
                      @close="removeRightById(scope.row, item2.id)"
                      closable
                      >{{ item2.authName }}</el-tag
                    >
                    <i class="el-icon-caret-right"></i>
                  </el-col>
                  <el-col :span="18">
                    <el-tag
                      @close="removeRightById(scope.row, item3.id)"
                      closable
                      v-for="item3 in item2.children"
                      :key="item3.id"
                      type="warning"
                      >{{ item3.authName }}</el-tag
                    >
                  </el-col>
                </el-row>
              </el-col>
            </el-row>
            <!-- <pre>
                {{ scope.row }}
            </pre> -->
          </template>
        </el-table-column>
        <!-- 索引列 -->
        <el-table-column label="#" type="index"></el-table-column>
        <el-table-column label="角色名称" prop="roleName"></el-table-column>
        <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
        <el-table-column label="操作" prop="level" width="300px">
          <template slot-scope="scope">
            <!-- <el-tag>{{ scope.level }}</el-tag> -->
            <el-button size="mini" icon="el-icon-edit" type="primary"
              >编辑</el-button
            >
            <el-button size="mini" icon="el-icon-delete" type="danger"
              >删除</el-button
            >
            <el-button
              size="mini"
              type="warning"
              icon="el-icon-setting"
              @click="showSetRightDialog(scope.row)"
              >分配权限</el-button
            >
          </template>
        </el-table-column>
      </el-table>
    </el-card>

    <!-- 分配权限 -->
    <el-dialog
      title="分配权限"
      :visible.sync="setRightDialogVisible"
      width="50%"
      @close="setRightDialogClosed"
    >
      <!-- 树形控件 -->
      <el-tree
        ref="treeRef"
        :default-checked-keys="defKeys"
        default-expand-all
        show-checkbox
        node-key="id"
        :data="rightsList"
        :props="treeProps"
      ></el-tree>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRightDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="allotRights">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 添加用户的对话框 -->
    <el-dialog
      title="添加用户"
      :visible.sync="addDialogVisible"
      width="50%"
      @close="setRolesDialogClosed"
    >
      <el-form :model="addroleslist"
      :rules="addroleslistRules"
      ref="addroleslistRef" label-width="80px">
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addroleslist.username"></el-input>
        </el-form-item>
        <el-form-item label="备注" prop="roleDesc">
          <el-input v-model="addroleslist.roleDesc"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addroleslistuser">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data () {
    return {
      roleId: '',
      rolesList: [],
      // 控制分权限显示与否
      setRightDialogVisible: false,
      addDialogVisible: false,
      rightsList: [],
      treeProps: {
        label: 'authName',
        children: 'children'
      },
      defKeys: [],
      // 添加用户的表单列表
      addroleslist: {
        username: '',
        roleDesc: ''
      },
      // 添加用户的验证规则
      addroleslistRules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          {
            require: true,
            min: 3,
            max: 10,
            message: '长度在 3 到 10 个字符',
            trigger: 'blur'
          }
        ],
        roleDesc: [{ required: false, message: '请输入用户名', trigger: 'blur' },
          {
            require: false,
            min: 3,
            max: 10,
            message: '长度在 3 到 10 个字符',
            trigger: 'blur'
          }]
      }
    }
  },
  created () {
    this.getRoleList()
  },
  methods: {
    async getRoleList () {
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200) {
        return this.$message.error('获取角色列表失败')
      }
      this.rolesList = res.data
      // console.log(this.rolesList)
    },
    async removeRightById (roles, rightId) {
      const confirmResult = await this.$confirm(
        '此操作将永久删除该文件, 是否继续?',
        '提示',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }
      ).catch((err) => err)
      if (confirmResult !== 'confirm') {
        return this.$message.info('取消了删除')
      }
      const { data: res } = await this.$http.delete(
        `roles/${roles.id}/rights/${rightId}`
      )
      console.log(res)
      if (res.meta.status !== 200) return this.$message.error('删除权限失败')
      roles.children = res.data
    },
    async showSetRightDialog (role) {
      this.roleId = role.id
      // 获取全部数据
      const { data: res } = await this.$http.get('rights/tree')
      // console.log(res)
      if (res.meta.status !== 200) {
        return this.$message.error('获取权限列表失败')
      }
      // 获取到的权限数据
      this.rightsList = res.data
      console.log(this.rightsList)
      this.getLeafKeys(role, this.defKeys)
      this.setRightDialogVisible = true
    },
    getLeafKeys (node, arr) {
      if (!node.children) {
        return arr.push(node.id)
      }
      node.children.forEach((item) => this.getLeafKeys(item, arr))
    },
    setRightDialogClosed () {
      this.defKeys = []
    },
    async allotRights () {
      const keys = [
        ...this.$refs.treeRef.getCheckedKeys(),
        ...this.$refs.treeRef.getHalfCheckedKeys()
      ]
      const idStr = keys.join(',')
      const { data: res } = await this.$http.post(
        `roles/${this.roleId}/rights`,
        { rids: idStr }
      )

      if (res.meta.status !== 200) {
        return this.$message.error('分配权限失败')
      }
      this.$message.success('分配权限成功')
      this.getRoleList()
      this.dialogVisible = false
    },
    async addroleslistuser () {
      const { data: res } = await this.$http.post('roles', this.addroleslist)
      if (res.meta.status !== 201) return this.$message('添加失败')
      console.log(res.data)
      this.showSetRightDialog()
    },
    setRolesDialogClosed () {
      this.addroleslist = {}
    }
  }
}
</script>

<style lang="less" scoped>
.el-tag {
  margin: 7px;
}
.bdtop {
  border-top: 1px solid #eee;
}
.bdbottom {
  border-bottom: 1px solid #eee;
}
.vcenter {
  display: flex;
  align-items: center;
}
</style>
